25049371911 has 4 divisors (see below), whose sum is σ = 33399162552. Its totient is φ = 16699581272.

The previous prime is 25049371909. The next prime is 25049371933. The reversal of 25049371911 is 11917394052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25049371911 - 2¹ = 25049371909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25049371811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4174895316 + ... + 4174895321.

It is an arithmetic number, because the mean of its divisors is an integer number (8349790638).

Almost surely, 2^25049371911 is an apocalyptic number.

25049371911 is a deficient number, since it is larger than the sum of its proper divisors (8349790641).

25049371911 is an equidigital number, since it uses as much as digits as its factorization.

25049371911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349790640.

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 25049371911 in words is "twenty-five billion, forty-nine million, three hundred seventy-one thousand, nine hundred eleven".